CN112297402A - Novel mold pressing cup processing technology - Google Patents

Abstract

The invention provides a novel mould pressing cup processing technology, which comprises the following processes: s1: fixing the elastic material at the edge of the cup cut-parts to form composite cut-parts; s2: the composite cut piece retracts under the action of the elastic material, and the inner side surface of the cut piece contacting with a human body and the outer side surface of the cut piece contacting with clothes form an arc-shaped curved surface; s3: and putting the composite cut pieces into a mould for hot press molding to form the cups. The bra is formed by hot-pressing the composite cut-parts, so that the quality of the bra is ensured, the materials are saved, the bra is attractive and elegant, special equipment or process is not needed, and the bra is suitable for large-scale production and popularization and application in a workshop.

Description

Novel mold pressing cup processing technology

Technical Field

The invention relates to the field of clothes, in particular to a novel mould pressing cup processing technology.

Background

The material for hot-pressing production of the prior bra cup basically adopts plane sponge or cut pieces made of related materials, and is directly placed on a mould for hot-pressing forming.

The material of the plane cutting piece is directly hot-pressed and formed on the die, and in the forming process, the plane cutting piece is under the acting force of the die, and in the deformation process, the material can be pulled into the die for forming. Due to the shape difference between the flat cut-parts material and the mould, and the physical property and the inherent mechanical property of the material, the size and the shape of each specific flat cut-parts and the actually used material can have the difference among individuals.

The traditional methods processed in the industry at present: increase the shape and the size of the plane cut-parts, ensure that each plane cut-part passes through the hot briquetting of specific mould, and the brassiere cup that produces is qualified.

According to the traditional treatment method in the industry, the obtained bra cups are qualified in quality, but the qualification is realized on the premise of wasting partial materials, the material cost of the produced product is high, and the requirements of low cost and environmental protection are not met.

Therefore, a new method and a new process for saving cut-parts materials are urgently needed in the clothing industry (particularly in the bra cup industry), and after the cut-parts are directly placed on a mould for hot-press molding, the bra cup quality is qualified, and the materials can be saved.

Disclosure of Invention

In view of the above, the invention aims to provide a novel mold pressing cup processing technology, which adopts composite cut-parts materials for hot press molding, ensures the bra quality and saves materials.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a novel mould pressing cup processing technology comprises the following processing steps:

s1: fixing the elastic material at the edge of the cup cut-parts to form composite cut-parts;

s2: the composite cut piece retracts under the action of the elastic material, and the inner side surface of the cut piece contacting with a human body and the outer side surface of the cut piece contacting with clothes form an arc-shaped curved surface;

s3: and putting the composite cut pieces into a mould for hot press molding to form the cups.

Furthermore, the fixing method of the elastic material and the cup cut pieces is sewing or sticking or welding or fusion. The fixing method of the elastic material and the cup cut pieces can be realized by adopting common production equipment and process.

Further, the elastic material comprises one or more than one, and the cup cut pieces comprise one or more than one. Set up multiple elastic material at same cup cut-parts, be favorable to selecting multiple colour to arrange to make the cup produce diversified shape, more can be loved the welcome of beautiful women, and set up an elastic material at same cup cut-parts, simple generous is fit for different consumer's demand, and same cup cut-parts can include one or more materials, can be better play the supporting role.

Furthermore, the edge part of the cup cut-parts is a local edge or an integral edge. According to the elasticity of elastic material and the material of brassiere cup cut-parts, cup size, pleasing to the eye requirement etc. confirm elastic material and cup cut-parts combination mode, the elastic material of the same type combines with the cup cut-parts of the same type, and the elasticity that elastic material fixed and produces at local edge is less, and compound cut-parts warp lessly, and elastic material fixes at whole edge, and the elasticity of production is great, and the deformation that compound cut-parts produced is great.

Furthermore, the elastic material is arranged on the inner side and/or the outer side of the cup cut pieces. Elastic material can set up in cup cut-parts inboard or the outside alone, also can set up respectively in the inboard outside of cup cut-parts, and the different colours of being convenient for arrange make different shapes, simple manufacture moreover, and elastic material sets up in the inside and outside both sides of cup cut-parts, can guarantee that compound cut-parts elasticity is great, and the curved surface bending degree after retracting is great to can arrange different colours in pairs.

Furthermore, the elastic material is coated at the edges of the cup cut pieces. The elastic material coats the edges of the cup cut pieces, so that better elasticity and deformation degree of the composite cut pieces are guaranteed, and the cup cut pieces are more attractive.

Further, the elastic material and the cup cut pieces are different in color. The bra cup has the embellishing effect, so that the appearance is more attractive.

Further, compound cut-parts retract, the curved surface that cut-parts medial surface formed is similar with mould terrace die curved surface, the curved surface that cut-parts lateral surface formed is similar with mould die curved surface. When putting compound cut-parts in hot pressing mould, similar curved surface plays the positioning action, avoids fixing a position not accurate pressure bias voltage mistake, causes the material extravagant.

Furthermore, the elastic material is fixed with the cup cut-parts after being stretched. After the elastic material is elongated, tensile force is generated, elastic deformation occurs, and after the elastic material is fixed with the cup cut pieces, the elastic material retracts, so that the composite cut pieces form a curved surface.

Furthermore, the elastic material and the cup cut-parts form an integral structure after hot press molding. The integrated structure does not generate bulges, and is comfortable to wear.

Compared with the prior art, the novel mould pressing cup processing technology has the following beneficial effects:

(1) compared with the traditional plane cutting piece, the novel mould pressing cup processing technology provided by the invention has the advantages that the composite cutting piece material is greatly saved, the material fixing cost of the product is reduced, and the purposes of energy conservation and emission reduction are achieved.

(2) The novel mould pressing cup processing technology provided by the invention adopts common production equipment or technology to fix the elastic material at the position of the plane cutting piece, does not need special equipment or technology, and is suitable for large-scale production and popularization and application in a workshop.

(3) According to the novel mold pressing cup processing technology provided by the invention, the composite cut pieces are placed in the mold for hot press molding, due to the similar shapes, the placement and positioning of the cut pieces are simple and accurate, the deformation change of materials is small in the hot press molding process in the mold cavity, and the waste of the materials is little for the hot press molded bra cups.

(4) According to the novel mold pressing cup processing technology provided by the invention, after being heated and pressed to be deformed, the cup and the cut pieces are integrated into a whole, the cup is comfortable to wear, materials are matched in different colors, the effect of decoration or embellishment on the appearance of the bra cup is achieved, and the quality and the competitiveness of a product are improved.

Drawings

FIG. 1 is a schematic view of a cup cut-piece according to a first embodiment of the present invention before being bonded to an elastic material;

FIG. 2 is a schematic front side view of a brassiere cup panel in combination with an elastic material according to an embodiment of the present invention;

FIG. 3 is a schematic view of a composite panel after the cup panels and the elastic material are combined according to a first embodiment of the present invention;

FIG. 4 is a side view of an elastic material according to an embodiment of the present invention forming a composite panel on the inside of a breast cup panel;

FIG. 5 is a side view of an elastic material according to an embodiment of the present invention forming a composite panel outside the breast cup panels;

FIG. 6 is a schematic side view of an elastic material according to an embodiment of the present invention forming a composite panel on both the inside and outside of a breast cup panel;

FIG. 7 is a schematic side view of a composite panel formed by wrapping elastic material around the edges of cup panels according to an embodiment of the present invention;

FIG. 8 is a schematic side view of a composite panel after thermal deformation of an elastic material inside the cup panels according to an embodiment of the present invention;

FIG. 9 is a side view of a composite panel after thermal deformation of an elastic material in accordance with an embodiment of the present invention on the outside of the breast cup panels;

FIG. 10 is a schematic side view of a composite panel after thermal deformation of an elastic material on both the inner and outer sides of a cup panel in accordance with an embodiment of the present invention;

FIG. 11 is a schematic side view of a thermally deformed composite panel with elastic material wrapped around the edges of the cup panels according to an embodiment of the present invention;

FIG. 12 is a schematic view of a composite panel forming a finished cup according to an embodiment of the present invention;

FIG. 13 is a schematic view of a brassiere cup panel of the second embodiment of the present invention before being bonded to an elastic material;

FIG. 14 is a schematic view of a second embodiment of the present invention showing the bra cup panels bonded to an elastic material;

FIG. 15 is a schematic view of a composite panel according to a second embodiment of the present invention forming a finished brassiere cup;

FIG. 16 is a schematic view of a third embodiment of the present invention before the bra cup panels are bonded to the elastic material;

FIG. 17 is a schematic view of a third embodiment of the present invention showing the bra cup panels bonded to an elastic material;

fig. 18 is a schematic view of a finished cup formed by the composite panel according to the third embodiment of the present invention.

Description of reference numerals:

1-cup panel, 101-first edge, 102-second edge, 103-panel inner side, 104-panel outer side, 105-cup inner side, 106-cup outer side, 10-composite panel, 110-cup, 11-first composite panel, 12-second composite panel, 13-third composite panel, 2-elastic material, 201-elastic material inner side, 202-elastic material outer side, 203-elastic material top, 21-first elastic material, 22-second elastic material, 3-first section line, 4-second section line, 5-cup finished product, 51-first cup finished product, 52-second cup finished product, 53-third cup finished product.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The novel mold pressing cup processing technology comprises the following processing steps:

s1: fixing the elastic material 2 at the edge of the cup cut-parts 1 to form composite cut-parts 10;

s2: the composite cut piece 10 retracts under the action of the elastic material, and the inner side 103 of the cut piece contacting with the human body and the outer side 104 of the cut piece contacting with the clothes form an arc-shaped curved surface;

s3: and putting the composite cut pieces 10 into a mould for hot-press molding to form the cups 110.

Furthermore, the fixing method of the elastic material 2 and the cup panel 1 is sewing or sticking or welding or fusion welding, the sewing method comprises sewing, hand sewing and the like, preferably sewing, the welding method preferably adopts ultrasonic welding, and the fusion welding method comprises ultrasonic fusion welding. The fixing method of the elastic material 2 and the cup cut pieces 1 is not limited to the above methods, and can be realized by adopting common production equipment and processes without adopting special equipment or special processes, thus being suitable for mass production in workshops.

Further, the elastic material 2 comprises one or more than one, and the cup cut pieces 1 comprise one or more than one. Set up multiple elastic material 2 at same cup cut-parts 1, be favorable to selecting multiple colour to arrange, and make the cup produce diversified shape, more can be loved the welcome of beautiful women, and set up an elastic material 2 at same cup cut-parts 1, it is simple generous, be fit for pursuing succinct consumer's demand, cup cut-parts 1 sets up multiple material, can better play the effect of supporting the chest, and increase chest aesthetic property, elastic material 2 combines the consumer demand that can satisfy most women with cup cut-parts 1 anyway.

Further, as shown in fig. 1, 13 and 16, the edge of the cup panel 1 is a partial edge or an integral edge. Confirm elastic material 2 and cup cut-parts 1 combination mode according to elastic material 2's elasticity and brassiere cup cut-parts 1's material, cup size, pleasing to the eye requirement etc. when elastic material 2 of the same kind type combines with cup cut-parts 1 of the same kind type, elastic material 2 fixes the elasticity that produces at local edge less, compound cut-parts 10 warp less, and elastic material 2 fixes at whole edge, and the elasticity of production is great, and the deformation that compound cut-parts 10 produced is great.

Further, as shown in fig. 4 to 6, the elastic material 2 is disposed inside and/or outside the cup panel 1. Elastic material 2 can set up in cup cut-parts 1 inboard or the outside alone, also can set up respectively in the cup cut-parts 1 inboard outside, and the different colours of being convenient for arrange make different shapes, simple manufacture moreover, and elastic material 2 sets up in the cup cut-parts 1 inside and outside both sides, can guarantee that compound cut-parts 10 elasticity is great, and the curved surface bending degree after retracting is great to can arrange different colours in pairs.

Further, as shown in fig. 7, the elastic material 2 is wrapped around the edges of the cup panel 1. The elastic material 2 coats the edges of the cup cut pieces 1, so that better elasticity and deformation degree of the composite cut pieces 10 are guaranteed, and the cup cut pieces are more attractive.

Further, the elastic material 2 is different from the cup cut pieces 1 in color. The setting of multiple colour plays the effect of embellishing to the brassiere cup, makes the brassiere outward appearance more pleasing to the eye.

Further, as shown in fig. 4 to 7, the composite cut segment 10 is retracted, the curved surface formed by the inner side surface 103 of the cut segment is similar to the curved surface of the male mold of the mold, and the curved surface formed by the outer side surface 104 of the cut segment is similar to the curved surface of the female mold of the mold. When putting compound cut-parts 10 into hot pressing mold, cut-parts medial surface 103 matches with the mould terrace die, and cut-parts lateral surface 104 matches with the mould die, and similar curved surface plays the positioning action, avoids the inaccurate pressure bias error in location, causes the material extravagant.

Furthermore, the elastic material 2 is fixed with the cup cut-parts 1 after being stretched. Before fixing, stretch elastic material 2 to certain length, produce elasticity after lengthening, after elastic material 2 is fixed with cup cut-parts 1, elastic material 2 contracts, drives compound cut-parts 10 and forms the curved surface, in the actual operation in-process, control elastic material 2's elasticity and the standard of being elongated, guarantee that elastic material 2 contracts and drives compound cut-parts 10 and warp the cambered surface that forms and accord with the requirement of production technology and quality.

Furthermore, the elastic material 2 and the cup cut-parts 1 form an integral structure after hot press molding. The elastic material 2 is smoothly connected with the inner surface and the outer surface of the cup cut-parts 1 and is integrated into a whole, the integrated structure is not raised, and the bra is comfortable to wear.

Specifically, in the first embodiment, as shown in fig. 1 to 12, in fig. 1, a first elastic material 21 is disposed at a first edge 101 of a cup panel 1, a length of the first elastic material 21 is smaller than a length of the first edge 101, the first edge 101 is linear, is located near an armpit of a human body, and a first section line 3 is formed from a center of the first edge 101 downward, as shown in fig. 2, a side view of the first embodiment, the first elastic material 21 and the cup panel 1 are both planar, the first elastic material 21 is stretched to a certain length according to an operation process requirement, an elastic force of the first elastic material 21 and a standard to be stretched are controlled during operation, the first elastic material 21 is ensured to be the same as the length of the first edge 101 after being stretched according to the standard, at this time, the first elastic material 21 is elastically deformed to generate a tensile force, and is further fixed with the edge of the cup panel 1 by sewing or attaching or ultrasonic welding, the first composite panel 11 is formed, as shown in fig. 3, when the first elastic material 21 is retracted under tension to recover elastic deformation, the first section line 3 of the first composite panel 11 becomes curved, and the side view thereof is shown in fig. 4 to 8.

In fig. 4, after the first composite cut piece 11 retracts, the inner side 103 and the outer side 104 of the cut piece both form an arc-shaped curved surface, the center of the inner side 103 of the cut piece is at the same side as the center of the outer side 104 of the cut piece, the first elastic material 21 is bonded to the cup cut piece 1 in such a way that the first elastic material 21 is arranged on the upper portion of the inner side 103 of the cut piece, the top of the first elastic material 21 is flush with the top of the cup cut piece 1, the inner side 201 of the elastic material protrudes out of the inner side 103 of the cut piece, the first composite cut piece 11 is placed into a hot-pressing mold, because the inner side 103 of the cut piece is similar to the curved surface of a male mold, the outer side 104 of the cut piece is similar to the curved surface of a female mold, the first composite cut piece 11 has a self-positioning effect, the positioning is, both ends attenuation, cup medial surface 105 accords with women's chest curve with the increase of cup lateral surface 106 camber, and first elastic material 21 forms a body structure through the extrusion in embedding cup cut-parts 1, and elastic material medial surface 201 forms same curved surface with cup medial surface 105, realizes seamless joint.

In FIG. 5, the first elastic material 21 is disposed on the upper portion of the outer side 104 of the first composite panel 11, the top of the first elastic material 21 is flush with the top of the cup panel 1, the outer side 202 of the elastic material protrudes out of the outer side 104 of the first composite panel 11, the first composite panel 11 is placed in a hot-pressing mold, because the inner side 103 of the first composite panel is similar to the curved surface of a male mold, the outer side 104 of the first composite panel is similar to the curved surface of a female mold, the composite panel 10 is self-positioned, the positioning is accurate, the mold is closed for hot-press molding, the cup 110 shown in FIG. 9 is obtained, the material between the inner side 105 of the cup and the outer side 106 of the cup flows, the thickness is thickened at the middle part, the two ends are thinned, the curvatures of the inner side 105 of the cup and the outer side 106 of the cup are increased, the, the outer side 202 of the elastic material and the outer side 106 of the cup form the same curved surface to realize seamless connection.

In fig. 6, the first elastic material 21 in the first composite cut piece 11 is bonded to the cup cut piece 1 in such a way that the first elastic material 21 is disposed on the inner side 103 of the cut piece, the upper portion of the outer side 104 of the cut piece, the top of the first elastic material 21 is flush with the top of the cup cut piece 1, the inner side 201 of the elastic material protrudes out of the inner side 103 of the cut piece, the outer side 202 of the elastic material protrudes out of the outer side 104 of the cut piece, the first composite cut piece 11 is placed in a hot-pressing mold, because the inner side 103 of the cut piece is similar to the curved surface of a male mold, the outer side 104 of the cut piece is similar to the curved surface of a female mold, the first composite cut piece 11 is self-positioned and accurate, the mold is closed for hot-pressing molding, the cup 110 shown in fig. 10 is obtained, the material between the inner side, first elastic material 21 forms a body structure through the extrusion in embedding cup cut-parts 1, and elastic material medial surface 201 forms same curved surface with cup medial surface 105, and elastic material lateral surface 202 forms same curved surface with cup lateral surface 106, realizes seamless joint.

In fig. 7, the first elastic material 21 in the first composite cut piece 11 is coated on the edge of the cup cut piece 1, the inner side 103 of the cut piece, the outer side 104 of the cut piece and the top of the cut piece are coated, the top surface 203 of the elastic material covers the top of the cup cut piece 1, the inner side 201 of the elastic material protrudes out of the inner side 103 of the cut piece, the outer side 202 of the elastic material protrudes out of the outer side 104 of the cut piece, the first composite cut piece 11 is placed into a hot-pressing mold, because the inner side 103 of the cut piece is similar to the curved surface of a convex mold, the outer side 104 of the cut piece is similar to the curved surface of a concave mold, the first composite cut piece 11 has left and right self-positioning, accurate positioning and hot-pressing molding after the mold is closed, the cup 110 shown in fig. 11 is obtained, the material between, first elastic material 21 forms a body structure through the extrusion in embedding cup cut-parts 1, and elastic material medial surface 201 forms same curved surface with cup medial surface 105, and elastic material lateral surface 202 forms same curved surface with cup lateral surface 106, realizes seamless joint.

As shown in fig. 12, the post-processing is performed on the cups 110 of the hot press molding, and the two symmetrical cups 110 are combined to obtain the qualified finished product 5 of the high-quality cup, which is the first cup 51, the first elastic material 21 is disposed at the first edge 101, and is processed and formed, and the first elastic material 21 can adopt the color different from that of the cup cut-pieces 1, and can be made into different patterns at the edge.

Example two, as shown in fig. 13 to 15, in fig. 13, the cup panel 1 is provided with a second elastic material 22 at a second edge 102, the second edge 102 is curved, the length of the second elastic material 22 is smaller than the arc length of the second edge 102, the second elastic material 22 is located on the inner side of the chest, a second section line 4 is formed from the middle part of the second edge 102 downwards, as shown in fig. 2 in a side view, the second elastic material 22 and the cup panel 1 are both planar, the second elastic material 22 is stretched to a certain length according to the operation process requirement, and is elastically deformed to generate a tensile force, the elastic force and the elongated standard of the second elastic material 22 are controlled during operation, the length of the second elastic material 22 after elongation according to the standard is equal to the arc length of the second edge 102, and then the second elastic material is fixed with the edge part of the cup panel 1 by sewing, attaching, ultrasonic welding or the like to form a second composite panel 12, as shown in fig. 14, at this time, the second elastic material 22 is retracted under the action of the pulling force to recover the elastic deformation, the second section line 4 on the second composite panel 12 becomes a curved line, the side view of the position is shown in fig. 4 to 8, the specific combination position of the second elastic material 22 and the cup panel 1 is the same as the first embodiment, and the state after the hot press molding is the same as the first embodiment.

In fig. 15, the cups 110 of the hot press molding are post-processed, and the two symmetrical cups 110 are combined to obtain the qualified finished products 5 of the large-capacity cups, which are the second cup finished products 52, the second elastic material 22 is processed and formed at the second edge 102, and the second elastic material 22 can adopt the color different from that of the cup cut-pieces 1, and can be made into different patterns at the edge.

Third embodiment, as shown in fig. 16 to 18, in fig. 16, the cup panel 1 is provided with a first elastic material 21 at a first edge 101, and a second elastic material 22 at a second edge 102, the length of the first elastic material 21 is smaller than the length of the first edge 101, the length of the second elastic material 22 is smaller than the arc length of the second edge 102, a second section line 4 is drawn downwards from the middle of the second edge 102, as shown in fig. 2, the first elastic material 21, the second elastic material 22 and the cup panel 1 are planar, the first elastic material 21 and the second elastic material 22 are stretched to a certain length according to the operating process requirements, the elasticity and the elongation standard of the first elastic material 21 and the second elastic material 22 are controlled during the operation, and are further fixed together with the edge of the cup panel 1 by sewing or attaching or ultrasonic welding, etc., to form a third composite panel 13, as shown in fig. 17, at this time, the elastic material 2 is retracted under the tensile force, the second section line 4 on the third composite panel 13 becomes a curved line, and the side views of the position are shown in fig. 4 to 8, the specific combination positions of the first elastic material 21, the second elastic material 22 and the cup panel 1 are the same as the first embodiment, and the state after the hot press molding is the same as the first embodiment.

In fig. 18, the cups 110 of the hot press molding are post-processed, and the two symmetrical cups 110 are combined to obtain the qualified finished product 5 of the large-capacity cups, which is the third cup finished product 53, the first elastic material 21 is disposed at the first edge 101, the second elastic material 22 is disposed at the second edge 102, and the first elastic material 21 and the second elastic material 22 can be processed and formed by different colors from the cup cut-parts 1, and different patterns can be made at the edges, and the first elastic material 21 and the second elastic material 22 are the same material or different materials, and can be the same color or different colors, and are not limited to a combination form.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A novel mould pressing cup processing technology is characterized by comprising the following processing steps:

s1: fixing the elastic material (2) at the edge of the cup cut-parts (1) to form a composite cut-part (10);

s2: the composite cut piece (10) retracts under the action of the elastic material (2), and the inner side surface (103) of the cut piece contacting with a human body and the outer side surface (104) of the cut piece contacting with clothes form an arc-shaped curved surface;

s3: and putting the composite cut pieces (10) into a mould for hot-press molding to form the cups (110).

2. A novel molded bra cup processing technology as claimed in claim 1, wherein the elastic material (2) and the bra cup cut pieces (1) are fixed by sewing, adhering, welding or fusing.

3. A novel molded breast cup processing technology as claimed in claim 1, wherein said elastic material (2) comprises one or more kinds, and said breast cup cut pieces (1) comprise one or more kinds.

4. A novel molded cup processing technology as claimed in claim 3, characterized in that the edge of the cup cut-parts (1) is a partial edge or an integral edge.

5. A novel molded cup processing technology as claimed in claim 1, characterized in that the elastic material (2) is arranged inside and/or outside the edge of the cup cut-parts (1).

6. A novel molded cup processing technology as claimed in claim 1, wherein the elastic material (2) is coated at the edge of the cup cut-parts (1).

7. A novel molded cup processing technology as claimed in claim 1, wherein the elastic material (2) is different in color from the cup cut pieces (1).

8. A novel mould pressing cup processing technology as claimed in claim 1, wherein the composite cutting piece (10) retracts, the curved surface formed by the inner side surface (103) of the cutting piece is similar to the curved surface of a male mould of a mould, and the curved surface formed by the outer side surface (104) of the cutting piece is similar to the curved surface of a female mould of the mould.

9. A novel molded bra cup processing technology as claimed in claim 1, wherein the elastic material (2) is fixed with the bra cup cut pieces (1) after being elongated.

10. A novel mould pressing cup processing technology as claimed in claim 1, characterized in that the elastic material (2) and the cup cut pieces (1) are formed into an integral structure after hot press forming.

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